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Update from Oliver Schmidt

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3490 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2005-04-24 22:13:15 +00:00
parent b36a0193c3
commit 2a688ef6fd
1 changed files with 35 additions and 9 deletions
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44
libsrc/apple2/crt0.s
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@ -4,10 +4,11 @@
; This must be the *first* file on the linker command line
;
.export _exit, __Exit
.export _exit
.import zerobss
.import initlib, donelib
.import callmain, callirq
.import COUT
.import __STARTUP_LOAD__, __BSS_LOAD__ ; Linker generated
.import __INTERRUPTOR_COUNT__ ; Linker generated
@ -36,12 +37,12 @@
jsr init
; Avoid re-entrance of donelib. This is also the _exit entry
_exit: ldx #<__Exit
lda #>__Exit
_exit: ldx #<exit
lda #>exit
jsr reset ; Setup RESET vector
; Check for valid interrrupt vector table entry number
lda intnum
; Check for valid interrupt vector table entry number
lda intnum
beq :+
; Deallocate interrupt vector table entry
@ -53,8 +54,8 @@ _exit: ldx #<__Exit
; Call module destructors
: jsr donelib
; Restore the original RESET vector. This is also the __Exit entry
__Exit: ldx #$02
; Restore the original RESET vector
exit: ldx #$02
: lda rvsave,x
sta SOFTEV,x
dex
@ -100,7 +101,7 @@ init: ldx #zpspace-1
ldx #<_exit
lda #>_exit
jsr reset ; Setup RESET vector
; Clear the BSS data
jsr zerobss
@ -120,16 +121,41 @@ init: ldx #zpspace-1
; Check for ProDOS
lda ENTRY
cmp #$4C ; Is MLI present? (JMP opcode)
bne :+
bne prterr
; Allocate interrupt vector table entry
jsr ENTRY
.byte $40 ; Alloc interrupt
.addr params
bcs prterr
; Push arguments and call main()
: jmp callmain
; Print error message and return
prterr: ldx #msglen-1
: lda errmsg,x
jsr COUT
dex
bpl :-
rts
errmsg: .ifdef __APPLE2ENH__
.byte $8D, 't'|$80, 'p'|$80, 'u'|$80, 'r'|$80, 'r'|$80
.byte 'e'|$80, 't'|$80, 'n'|$80, 'i'|$80, ' '|$80, 'c'|$80
.byte 'o'|$80, 'l'|$80, 'l'|$80, 'a'|$80, ' '|$80, 'o'|$80
.byte 't'|$80, ' '|$80, 'd'|$80, 'e'|$80, 'l'|$80, 'i'|$80
.byte 'a'|$80, 'F'|$80, $8D
.else
.byte $8D, 'T'|$80, 'P'|$80, 'U'|$80, 'R'|$80, 'R'|$80
.byte 'E'|$80, 'T'|$80, 'N'|$80, 'I'|$80, ' '|$80, 'C'|$80
.byte 'O'|$80, 'L'|$80, 'L'|$80, 'A'|$80, ' '|$80, 'O'|$80
.byte 'T'|$80, ' '|$80, 'D'|$80, 'E'|$80, 'L'|$80, 'I'|$80
.byte 'A'|$80, 'F'|$80, $8D
.endif
msglen = * - errmsg
; ------------------------------------------------------------------------
.segment "LOWCODE"